JP2002200381A - Thread coloring sewing machine and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the ink drops discharged from ink discharge nozzles to reliably hit a sewing thread even when a fine thread is used for the sewing thread. SOLUTION: This thread coloring sewing machine is provided with a thread coloring means 13 coloring the sewing thread 19 with the ink discharged from an ink jet head 33. The ink jet head 33 is provided with many ink discharged nozzles 39a aligned in a line, the aligning direction of the ink discharge nozzles 39a is set along the feeding direction of the sewing thread 19, and the sewing thread 19 is moved in the direction crossing the feeding direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thread coloring sewing machine provided with a thread coloring means for coloring a sewing thread with ink discharged from an ink jet head, and a control method thereof.

[0002]

2. Description of the Related Art Conventionally, a sewing machine having a function of coloring a sewing thread (upper thread) has such a configuration. Also,
The present applicant has also applied for a configuration described in Japanese Patent Application Laid-Open No. 59-137096, and in this configuration, ink is sprayed onto a sewing thread by an ink jet system to be colored. Furthermore, the present applicant has recently developed a sewing machine for coloring a sewing thread by an ink jet method.
A Japanese Patent Application No. 2000-230400 has been filed. This application has not been published yet.

[0003]

By the way, in the configuration of the above-mentioned unpublished application, a large number of ink ejection nozzles are provided in a line in an ink jet head for coloring a thread. The ink jet head is configured so that the arrangement direction of the ink ejection nozzles arranged in one line is in the direction along the direction of feeding the sewing thread, and that the sewing thread is sent immediately in front of the ink ejection nozzle. It is configured.

In this configuration, the sewing thread is colored by the ink droplets ejected from the ink ejection nozzles of the ink jet head hitting the sewing thread.
However, in the above configuration, a considerably thin thread may be used as a sewing thread, and when an ink droplet is discharged from the ink discharge nozzle to the fine thread, the ink drop may not hit the sewing thread. In such a case, since the sewing thread cannot be colored, uneven coloring occurs.

Accordingly, an object of the present invention is to provide a thread coloring sewing machine which can reliably apply ink droplets ejected from an ink ejection nozzle to a sewing thread even when a thin thread is used as the sewing thread. .

[0006]

SUMMARY OF THE INVENTION A thread coloring sewing machine according to the present invention is a thread coloring sewing machine comprising a stitch forming means, a cloth feeding means, and a thread coloring means for coloring a sewing thread with ink discharged from an ink jet head. A plurality of ink ejection nozzles provided in the inkjet head so as to be arranged in a line, and an arrangement direction of the ink ejection nozzles is configured to be in a direction along a feed direction of the sewing thread; In the direction intersecting the feed direction.

According to the above construction, the sewing thread moves in the direction intersecting the arrangement direction of the ink ejection nozzles, which is the feeding direction, so that the ink droplets ejected from the ink ejection nozzles can easily hit the sewing thread, and the hit rate can be improved. Goes up.
For this reason, even when a thin thread is used as the sewing thread, the ink droplet ejected from the ink ejection nozzle can be applied to the thin sewing thread.

Further, in the case of the above configuration, it is preferable that the thread moving means is configured to move the sewing thread by moving a needle bar base by a movement applying section.
Further, it is still more preferable that the movement applying section is provided on a swing cam that swings the needle bar base in the left-right direction. Furthermore, it is preferable that the thread moving means is constituted by a thread vibrating means for vibrating the sewing thread.

Further, a plurality of ink ejection nozzles arranged in a line are provided in the ink jet head in a plurality of rows, and one color of ink is assigned to the one row of the ink ejection nozzles. It is preferable that the ink is ejected in a plurality of colors, and the plurality of colors are arranged in a direction intersecting with the direction in which the sewing thread is fed.

On the other hand, in a control method of a thread coloring sewing machine including a thread coloring means for coloring a sewing thread with ink ejected from an ink jet head, the ink jet head is provided with a large number of ink ejection nozzles arranged in a line. It is also preferable that the arrangement direction of the ink discharge nozzles is a direction along the feed direction of the sewing thread, and the sewing thread is controlled to vibrate in a direction intersecting the feed direction.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is applied to an embroidery sewing machine will be described below with reference to FIGS. The basic configuration of the embroidery sewing machine according to this embodiment is described in Japanese Patent Application No. 2000-2304 filed earlier by the present applicant.
The configuration is almost the same as that described in No. 00. Therefore,
The same portions as those of the above-mentioned Japanese Patent Application No. 2000-230400 will be briefly described, and different portions will be described in detail.

First, FIG. 3 to FIG. 6 are views showing the overall configuration of an embroidery sewing machine according to this embodiment. As shown in FIGS. 3 to 6, a free arm 2 is provided at the left end of the bed of the machine frame 1 of the embroidery sewing machine, and the embroidery device 3 is detachably mounted on the free arm 2. Have been.

An embroidery table 5 is provided on the main body frame 4 of the embroidery device 3 so as to be movable in XY directions.
An X direction stepping motor 6 for driving the embroidery table 5 in the X direction is provided inside the main body frame 4 (see FIG. 12).
And a Y-direction stepping motor 7 (see FIG. 12) for driving the embroidery table 5 in the Y-direction. The electrical connection between the embroidery device 3 and the embroidery sewing machine main body is made by connecting a connector 8 provided on the main body frame 4 and a connector 9 provided on the embroidery sewing machine main body. And
An embroidery frame 11 that supports a cloth (a material to be sewn) 10 (see FIG. 7) is detachably mounted on the embroidery table 5.

A presser bar 12 is supported on the machine frame 1 so as to be vertically movable, and a cloth presser (not shown) is usually attached to a lower end of the presser bar 12. In this embodiment, For example, a coloring unit 14 of a coloring unit 13 which is a thread coloring means is attached. The coloring unit 13 and the coloring unit 14 will be described later. Presser bar 12
The cloth presser is urged downward by a press spring (not shown). The presser bar 12 is manually operated by the user,
The motor is driven up and down by a motor-driven automatic lifting mechanism (not shown). Further, the feed dog 15 for feeding the cloth in cooperation with the cloth presser is provided so as to move up and down, move back and forth, and move left and right. The feed dog 15 is configured to be located below the needle plate 16 during embroidery sewing.

Further, a needle bar 17 is provided on the head of the machine frame 1.
(See FIG. 10) is provided so as to be able to move up and down, swing in the left-right direction, and rotate. A specific driving mechanism of the needle bar 17 will be described later. A sewing needle 18 is attached to the lower end of the needle bar 17 via a needle holder 17a. When the sewing needle 18 is moved up and down, a stitch is formed on the cloth 10 by the lower thread in the shuttle and the upper thread 19 inserted through the sewing needle 18 in cooperation with the shuttle disposed below the needle plate 16. It is configured to be.

Further, a start / stop switch 20 for instructing start or stop of a sewing operation is provided on a head portion of the machine casing 1. A card slot is provided in the pillar portion 21 of the machine casing 1, and a ROM card 22 storing sewing data is attached to a card connector 23 provided in the pillar portion 21 via the slot. It has become possible. In the case of the embroidery sewing machine having the above configuration, the ROM card 2
The XY movement of the embroidery frame 11 and the vertical movement of the needle bar 17 cooperate in accordance with the sewing data in 2, so that various embroidery patterns are formed on the cloth 10.

Next, the specific structure of the coloring unit 13 will be described with reference to FIGS. 3, 4, and 7 to 9. FIG. The coloring unit 13 includes a coloring section 14 attached to the lower end of the presser bar 12 and an ink supply / recovery device 24. The ink supply / recovery device 24 includes an ink slot 26 for setting an ink cassette 25 and an air compressor 29 for flowing air through a recovery tube 27 to recover excess ink in a recovery tank 28.

A power supply of the air compressor 29 is connected to a connector 32 provided on the sewing machine main body via a connection cable 30 and a connector 31. Also, electrical connection between an ink jet head 33 (see FIG. 7) described later and the sewing machine main body side is realized by the wiring wired along the ink supply tube 34 or the collection tube 27, the connection cable 30 and the like. I have.

The ink cassette 25 is composed of, for example, four color ink cassettes of black, magenta, yellow and cyan. Note that the ink supply and recovery device 24 is
For example, you may comprise so that it may also serve as a thread stand which sets the upper thread of a cheese winding type.

The coloring section 14 is detachably attached to the lower end of the presser bar 12 with a tightening screw 35.
As shown in FIG. 7A, the coloring portion 14 is
2, a main body 37 made of synthetic resin, and an ink jet head 33 exchangeably housed in the main body 37. A substantially D-shaped mounting groove 36a for mounting the lower end of the holding bar 12 is formed in the upper portion of the mounting body 36, and a flange portion 36b having a concave portion for fitting the upper portion of the main body 37 is formed in the lower end. Have been. The main body 37 is fixedly fastened to the mounting body 36 by screws 38.

The ink jet head 33 is housed and fixed in a recess formed in the main body 37 so as to be embraced from the lower surface side. Also, the main body 37
On the lower surface of the front part, a cloth presser surface 37a corresponding to a normal cloth presser is formed. Further, a needle hole 37b penetrating in a vertical direction is formed in a front portion of the main body 37.
An opening is formed at an intermediate portion of the needle hole 37b in the vertical direction, and a large number of ink ejection nozzles 39a formed on the front end face of the ink jet head 33 face the opening.

On the left and right sides of the main body 37, four ink receiving ports 37c to 37f are formed on each side. These ink receiving ports 37c to 37f are configured so that four colors of ink are supplied from the ink cassette 25 via the ink supply tube 34, respectively.

The ink-jet head 33 is composed of a substantially rectangular parallelepiped electrostrictive element block, for example, a piezo element or the like. A sheet 39 made of a synthetic resin flat plate is affixed to the front end face of the electrostrictive element block, and a large number of ink discharge nozzles 39a are formed on the sheet 39 so as to be arranged in a line in the vertical direction. (See also FIG. 1). Comb-shaped ink chambers 40a to 40d each including a number of slits are formed on the right side from the center in the electrostrictive element block. An ink distribution sheet 41 made of a synthetic resin flat plate is attached to the side surface on the right opening side of each of the ink chambers 40a to 40d so as to close the comb-shaped opening.

In the ink distribution sheet 41, a group of small holes (not shown) connecting the group of ink chambers 40a and the ink receiving port 37c, and a group of small holes (not shown) connecting the group of ink chambers 40b and the ink receiving port 37d. ) Is formed. The communication grooves 42a and 42b formed on the front and rear surfaces of the electrostrictive element block allow the ink chambers 40c group,
The group 0d and the ink receiving ports 37e and 37f are configured to communicate with each other.

An electrode (not shown) is provided at a predetermined position on the surface of the electrostrictive element block for expanding and contracting the ink chambers 40a to 40d to discharge ink droplets from the ink discharge nozzles 39a. . The control of the application of the voltage to these electrodes is configured to be executed by the control device of the sewing machine main body at the timing of the drive timing of the sewing machine.

In this configuration, as shown in FIG. 1, the ink ejection nozzles 3
9a, cyan ink is ejected from the top one, magenta ink is ejected from the second one,
The yellow ink is ejected from the fourth ink, the black ink is ejected from the fourth ink, and the order of the four colors is repeated.

The ink ejection nozzles 39a arranged in a line are substantially parallel to the sewing thread (upper thread) 19 extending from the entanglement point of the seam of the cloth 10 to the eye of the sewing needle 18 and are slightly apart from the sewing thread. And are arranged to face each other. That is, the arrangement direction of the ink ejection nozzles 39a is
In the direction along the feed direction. Thereby, the ink droplet ejected from the ink ejection nozzle 39a hits the sewing thread 19.

Further, in the case of the present embodiment, the sewing thread 19 in front of the ink discharge nozzle 39a is configured to vibrate in the left-right direction (see the arrow in FIG. 1), specifically, as described later. I have. That is, the sewing thread 19 is configured to move in a direction intersecting the feed direction. Thus, the ink droplet ejected from the ink ejection nozzle 39a is configured to have a high hit rate at which the ink droplet hits the sewing thread 19.

Now, the needle hole 37b of the main body 37 will be described.
And a specific configuration around it will be described. The needle hole 37b is a hole that expands so that the upper side is widened. The shape of the guide needle hole 37g, which is the opening at the lower end, is a diamond shape that is long in the front-rear direction, and the opening at the upper end is D-shaped. .
In the case of this configuration, when a balance (not shown) is positioned near the uppermost point during embroidery sewing, the upper thread 19 is connected to the sewing needle 18 and the ink jet head 33 of the guide needle hole 37g.
And the upper thread 18 is positioned so as to be parallel to the arrangement direction of the ink discharge nozzles 39a.

On the inner surface on the front side of the needle hole 37b, a vertically long groove-shaped ink reservoir 37h is formed.
An ink absorbing member 43 is accommodated in the ink reservoir 37h. A through-hole is formed in the lower part of the ink reservoir 37h toward the front, and this through-hole serves as an ink discharge hole 37i. In the case of this configuration, when the collection tube 27 is connected to the ink discharge hole 37i, the ink can be sucked and collected from the ink absorbing member 43 by the air flow of the air compressor 29 of the ink supply and collection device 24, and collected in the collection tank 28. It has a configuration that can be used.

Next, a driving mechanism of the needle bar 17 will be described with reference to FIGS. 2, 10 and 11. FIG. First, FIG.
As shown in FIG. 0 (a), the needle bar 17 is connected to a balance crank 45 fixed to the left end of the main shaft 44 of the embroidery sewing machine via a needle bar crank rod 46 and a needle bar holder 47. The needle bar 17 is moved up and down according to the rotation of the main shaft 44.

As shown in FIG. 10B, the needle bar holder 47 comprises a bifurcated member 47a and a columnar member 47b rotatably supported by the bifurcated member 47a. The needle bar 17 is rotatably inserted into a through hole formed in the columnar member 47b. The needle bar holder 47 is sandwiched between set collars 48, 48 fixed to the needle bar 17. With this configuration, the needle bar 17 is
7, it is configured to be rotatable and swingable in the left-right direction.

A spur gear 49 is provided at the upper end of the needle bar 17. An intermediate gear 50 meshing with the gear 49 can be rotated by a pin 52 erected on a needle bar base 51. It is supported by. The intermediate gear 50 has a vertically extending spur gear portion 50a and a helical gear portion 50b. The helical gear portion 50b includes an idle gear 53
Are engaged. This idle gear 53 is
Is rotatably supported by a support shaft 54 that supports the rockable member. The support shaft 54 is supported by the machine frame 1.

The idle gear 53 has a machine frame 1
The shaft gear 56 of the needle bar rotation stepping motor 55 fixed to the shaft gear is engaged. In this configuration, when the needle bar rotating stepping motor 55 rotates, the needle bar 17 is driven to rotate via the shaft gear 56, the idle gear 53, the intermediate gear 50, and the gear 49. As described above, when the needle bar 17 is rotated, the sewing thread 19 is correspondingly rotated.
When the ink droplets are applied from the inkjet head 33 to the sewing thread 19 for coloring, the ink droplets can be uniformly applied to the entire peripheral surface of the sewing thread 19. In this embodiment, it is possible to swing the needle bar base 51 and the needle bar 17 in the left-right direction while the needle bar rotation stepping motor 55 is driven or stopped.

Next, a structure for swinging the needle bar base 51 and the needle bar 17 in the left-right direction will be described with reference to FIG.
As shown in FIG. 11, the needle bar base 51 is swung in the left and right direction via a swing cam 58 and a Z swing lever 59 by a needle bar swing stepping motor 57 fixed to the machine frame 1. Is configured. Thus, the configuration is such that so-called zigzag sewing can be performed. still,
A swing cam 58 is fixed to a drive shaft of the needle bar swing stepping motor 57, and the swing cam 58 is driven to rotate by the needle bar swing stepping motor 57.

Here, as shown in FIG.
For example, a tooth portion 58a, which is a movement imparting means, is formed in a part of the outer peripheral portion. Further, a circular contact member 60 with which the tooth portion 58a of the swing cam 58 abuts is provided at an intermediate portion of the needle bar base 51 in the vertical direction. In the case of this configuration, when the swing cam 58 is rotated by the needle bar swinging stepping motor 57, the tooth portion 58a abuts on the abutment member 60, so that the abutment member 60 and the needle bar base 51 (and the needle bar base 51) The rod 17 and thus the sewing thread 19) are finely vibrated (that is, moved) in the left-right direction.
That is, the needle bar swinging stepping motor 57, the swing cam 5
The thread moving means and the thread vibrating means are constituted by the eight tooth portions 58a, the contact member 60 of the needle bar base 51 and the like. In FIG. 11, the contact member 60 and the teeth 58a are omitted.

Incidentally, as shown in FIG.
At the base of the sewing needle 18 attached to the lower end of the
A cleaning member 61 made of silicon rubber or the like is mounted. The cleaning member 61 has a shape that can be inserted into the needle hole 37b of the coloring section 14 from above. The cleaning member 61 is inserted into the needle hole 37b of the coloring portion 14 when the presser bar 12 is at the raised position, closes the ink discharge nozzle 39a of the ink jet head 33, and closes the surface of the ink discharge nozzle 39a. It is configured to slidably contact and wipe off ink adhered to the surface to clean.

Also, as shown in FIG.
An operation panel 62 is disposed on the front surface of the arm section. The operation panel 62 includes a liquid crystal display (LC
D) and various operation switches.

Next, the electrical configuration of the embroidery sewing machine of the above embodiment will be described with reference to FIG. A control device 63 for controlling the entire operation of the embroidery sewing machine includes a CPU 64,
ROM 65, RAM 66, input interface 67,
It comprises an output interface 68 and the like. The control device 63 inputs signals from the start / stop switch 20, the timing signal generator 69 provided near the main shaft 44, the operation switches on the operation panel 62, the coloring unit 13 and the like via the input interface 67. It is configured to be.

Then, the control device 63 controls the sewing machine motor 70 for rotating and driving the main shaft 44, the needle bar swinging stepping motor 57, the feed dog driving stepping motor 71, and the needle bar rotating stepping motor 55 via the output interface 68. , Liquid crystal display of operation panel 62, X
The directional stepping motor 6, the Y-direction stepping motor 7, the inkjet head 33 of the coloring unit 13, the air compressor 29, and the like are driven and controlled.

In the ROM 65, a control program for controlling the entire operation of the embroidery sewing machine, that is, each motor 7
0, 57, 71, 55, 6, 7; a control program for driving and controlling the liquid crystal display; a control program for driving and controlling the inkjet head 33, the air compressor 29, etc .; Various data required for execution are stored.

Next, when performing embroidery sewing on the embroidery sewing machine, the upper thread (sewing thread) 19 is applied to the coloring unit 13.
The operation when coloring is described with reference to FIG. First, the embroidery device 3 is mounted on the sewing machine body, and the cloth 10 is set on the embroidery frame 11. Also,
For example, a thread spool 72 (see FIG. 3) of a white thread is set as the upper thread 19, and the upper thread 19 is pulled out from the thread spool 72 and passed through the eye of the sewing needle 18 via a predetermined thread hooking path. Keep it.

Then, a power switch (not shown) is turned on, and an embroidery pattern (sewing data) to be sewn is selected, and a cleaning process of the ink jet head 33 of the coloring unit 13 is appropriately executed. Thereafter, when the start / stop switch 20 is operated, a sewing operation for moving the needle bar 17 up and down and moving and driving the embroidery frame 11 is executed.
A coloring operation for coloring 9 is performed. In this case, even if there is a color change during sewing of the embroidery pattern, the upper thread 19 is automatically colored, so that there is no need to replace the upper thread 19. The uncolored part at the start of sewing and the colored part at the time of color change are 1 to
With about two stitches, color change with very little error can be executed.

Here, the timing at which the ejection of ink droplets from the ink jet head 33 of the coloring unit 13 is executed in accordance with the operation of the main elements of the sewing machine will be described with reference to FIG. The horizontal axis in FIG. 13 indicates 360 degrees for one rotation of the main shaft 44, and 0 degrees indicates the needle bar 17.
Indicates the uppermost position. As shown in FIG. 13, the balance is configured to stop at the highest position in a range of, for example, 28 degrees to 103 degrees. As a configuration for stopping the balance at the highest position, a well-known configuration may be appropriately used. Also,
The needle tip of the needle bar 17, the shuttle, the horizontal feed of the feed dog, the vertical feed of the feed dog, the embroidery frame 11 feed, and the operations of the presser bar 12 are shown in FIG.
It is set as shown in

The rotation of the needle bar 17 rotates forward in the range of 28 to 80 degrees, and then reverses and returns to the original position by 180 degrees. Furthermore, coloring unit 1
Ink nozzles 39 of the third inkjet head 33
The ejection of the ink droplet from a is performed in the range of 28 degrees to 80 degrees. By discharging the ink droplets, the upper thread 19 is colored from the vicinity of the knot of the thread formed on the cloth 10 to the length of the thread required for the next seam to be formed. At this time, since the ink of the four colors (black, magenta, yellow, and cyan) is appropriately ejected from the inkjet head 33, the upper thread 19 can be colored in a desired color.

In addition, in this embodiment, as shown in FIG. 2, the needle bar swinging stepping motor 57 is driven to rotate the swing cam 58 in the range of 28 degrees to 80 degrees, so that the swing cam 58 is rotated. Control is performed so that the tooth portion 58 a of the moving cam 58 abuts on the contact member 60 of the needle bar base 51. Thereby, the contact member 60, the needle bar base 51, the needle bar 17, and the sewing thread 19 are finely vibrated (that is, moved) in the left-right direction.
I do. As a result, the ink droplet ejected from the ink ejection nozzle 39a of the inkjet head 33 easily hits the sewing thread 19, and the hit rate increases. Therefore, even when a thin thread is used as the sewing thread (upper thread) 19, the ink droplets ejected from the ink ejection nozzle 39a can be reliably applied to the thin sewing thread.

In the above embodiment, the ink jet head 33 is provided with the ink ejection nozzles 39a arranged in a line. However, the present invention is not limited to this. The second to fourth ink jet nozzles shown in FIGS. As in the embodiment, the ink jet head may be provided with a plurality of rows of ink ejection nozzles.

First, in the second embodiment shown in FIG. 14, the ink jet head 75 is provided with a large number of ink ejection nozzles 76 arranged in one row, for example, four rows. The four rows of ink ejection nozzles 76 are configured to allocate one color of ink. Specifically, one line of the ink discharge nozzles 76 at the left end in FIG. 14 is cyan, one line of the ink discharge nozzles 76 on the right is magenta, and one line of the ink discharge nozzles 76 on the right is yellow. One row of ink ejection nozzles 76 at the right end is black. Then, the sewing thread 19 is configured to vibrate in the left-right direction.

The configuration of the second embodiment other than that described above is the same as that of the first embodiment. Therefore, in the second embodiment, substantially the same operation and effect as in the first embodiment can be obtained.

In the third embodiment shown in FIG. 15, the ink jet head 77 is provided with a plurality of, for example, four, rows of a large number of ink discharge nozzles 78 arranged in a row in the horizontal direction. The four rows of ink ejection nozzles 78 are configured to be assigned one color ink. Specifically, one line of ink discharge nozzles 78 at the upper end in FIG. 15 is cyan, one line of ink discharge nozzles 78 below it is magenta, and one line of ink discharge nozzles 78 below is yellow. One row of ink ejection nozzles 78 at the lower end is black. Then, the sewing thread 19 is configured to vibrate in the left-right direction.

The configuration of the third embodiment other than the above is the same as that of the first embodiment. Therefore, in the third embodiment, substantially the same operation and effect as in the first embodiment can be obtained.

Further, in the fourth embodiment shown in FIG. 16, the ink jet head 75 is disposed obliquely. Otherwise, the configuration of the fourth embodiment is the same as that of the second embodiment. Therefore, in the fourth embodiment, substantially the same operation and effect as in the second embodiment can be obtained.

In the first to third embodiments, the sewing thread 19 is vibrated (moved) in a direction perpendicular to the feed direction. However, the present invention is not limited to this. It may be configured to vibrate (move) in an intersecting direction (for example, an oblique direction shown in the fourth embodiment).

In each of the above embodiments, the needle bar 17 is rotated when the sewing thread 19 is colored.
Instead, the rotation of the needle bar 17 may be stopped. Further, in each of the above embodiments, when the sewing thread 19 is colored, the balance is stopped at the uppermost position. However, the present invention is not limited to this. As in the fifth embodiment shown in FIG. The balance may not be stopped.

That is, in the fifth embodiment, as shown in FIG. 17, the balance is operated in the same manner as a normal sewing machine, and is not stopped at the uppermost position. The other configuration of the fifth embodiment is the same as that of the first embodiment. Therefore, in the fifth embodiment, substantially the same operation and effect as in the first embodiment can be obtained.

Further, in each of the above embodiments, when the structure for moving the upper thread 19 in the left-right direction is realized, the swing cam 5
The tooth portion 58a of No. 8 is configured to contact the contact member 60 of the needle bar base 51, but this is an example, and the upper thread 19 is moved (vibrated) in the left and right direction by another method or configuration. You may.

Further, in each of the above embodiments, the coloring unit 1
The third colored portion 14 is configured so as to color the upper thread 19 from the vicinity of the knot of the thread formed on the cloth 10 to the thread length required for the next seam to be formed, but is not limited to this. Instead, the coloring may be performed at an appropriate position in the middle of the feed path of the upper thread 19. Also in this case, it is preferable that the sewing thread in the feed path corresponding to the coloring portion is moved (vibrated) in a direction intersecting the feed direction.

[0058]

As is apparent from the above description, according to the present invention, the arrangement direction of the ink ejection nozzles arranged in one line of the ink jet head is set to the direction along the feed direction of the sewing thread, and the sewing thread is set in the feed direction. The ink droplets ejected from the ink discharge nozzles are configured to be moved in the crossing direction, so that the ink droplets ejected from the ink discharge nozzles can be easily hit on the sewing thread. An excellent effect is achieved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention and showing an ink jet head and sewing thread.

FIG. 2 is a front view showing a mechanism for swinging a needle bar base.

FIG. 3 is a front view of the embroidery sewing machine.

FIG. 4 is a perspective view showing the embroidery device and the periphery of a coloring unit of the coloring unit.

FIG. 5 is a top view of the embroidery device.

FIG. 6 is a side view of the embroidery device.

7A is a cutaway side view of a colored portion, and FIG. 7B is a partial bottom view of the colored portion.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10A is a perspective view showing a driving mechanism of a needle bar,
(B) is an exploded perspective view of the needle bar holder.

FIG. 11 is a perspective view showing a mechanism for swinging a needle bar base.

FIG. 12 is a block diagram showing an electrical configuration.

FIG. 13 is a timing chart of the operation of each configuration.

FIG. 14 is a view corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 15 is a view corresponding to FIG. 1, showing a third embodiment of the present invention.

FIG. 16 is a view corresponding to FIG. 1, showing a fourth embodiment of the present invention.

FIG. 17 is a timing chart showing the operation of the balance and the needle bar according to the fifth embodiment of the present invention.

[Explanation of symbols]

1 is a machine frame, 2 is a free arm section, 3 is an embroidery device, 10 is a cloth, 11 is an embroidery frame, 12 is a presser bar, 13 is a coloring unit (thread coloring means), 14 is a coloring section, 16 is a needle plate, 17 is a needle bar, 18 is a sewing needle, 19 is an upper thread (sewing thread), 20 is a
A stop switch, 22 is a ROM card, 24 is an ink supply and collection device, 25 is an ink cassette, 27 is a collection tube, 28 is a collection tank, 33 is an inkjet head,
34 is an ink supply tube, 37 is a main body, 37b is a needle hole, 37g is a guide needle hole, 39 is a sheet, 39a is an ink discharge nozzle, 40a to 40d are ink chambers, 41 is an ink supply sheet, 43 is an ink absorbing member, 44 is the main shaft, 5
1 is a needle bar stand, 55 is a stepping motor for rotating the needle bar, 5
7 is a stepping motor for swinging the needle bar, 58 is a swing cam,
58a is a tooth portion (movement applying means), 59 is a Z swing lever,
Reference numeral 60 denotes a contact member, 61 denotes a cleaning member, 62 denotes an operation panel, 63 denotes a control device, 70 denotes a sewing machine motor, 71 denotes a feed dog driving stepping motor, 75 denotes an ink jet head, 76 denotes an ink discharge nozzle, and 77 denotes an ink jet head. , 78 indicate ink discharge nozzles.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teruo Imama 15-1, Naeshiro-cho, Mizuho-ku, Nagoya-shi Inside Brother Industries, Ltd. (72) Inventor Teiji 15-1 Naeshiro-cho, Mizuho-ku, Nagoya-city Brother Industrial Co., Ltd. In-company (72) Inventor Hiroshi Hira 15-1, Naeshiro-cho, Mizuho-ku, Nagoya-shi Inside Brother Industries, Ltd. (72) Inventor Naoto Asai 15-1 Naeshiro-cho, Mizuho-ku, Nagoya-shi, Brother Industries, Ltd. (72) Invention Person Motoaki Yamanashi 15-1 Naeshiro-cho, Mizuho-ku, Nagoya F-term (reference) in Brother Industries, Ltd. 2C056 FB01 HA22 HA27 3B150 AA15 CB04 CE27 FB00 LA48 LA57 LA67 LA73 LB02 NA53 NA62 NA64 NB14 NC06 QA04 QA06

Claims (6)

[Claims] 1. A thread coloring sewing machine comprising stitch forming means, cloth feeding means, and thread coloring means for coloring a sewing thread with ink ejected from an ink jet head, wherein the thread coloring sewing machine is provided so as to be arranged in a line on the ink jet head. A plurality of ink ejection nozzles, wherein the arrangement direction of the ink ejection nozzles is in a direction along the feed direction of the sewing thread, and the thread movement for moving the sewing thread in a direction intersecting the feed direction. A thread-colored sewing machine comprising means. 2. The thread-coloring sewing machine according to claim 1, wherein the thread moving means is configured to move the sewing thread by moving a needle bar base by a movement applying section. 3. The thread-colored sewing machine according to claim 2, wherein the movement applying section is provided on a swing cam that swings the needle bar base in the left-right direction. 4. The thread coloring sewing machine according to claim 1, wherein said thread moving means comprises a thread vibrating means for vibrating said sewing thread. 5. A method according to claim 1, wherein the ink jet head is provided with a plurality of rows of ink discharge nozzles arranged in a row, and by assigning one color ink to the ink discharge nozzles of the row, 5. The apparatus according to claim 1, wherein a plurality of colors of ink are ejected, and the plurality of colors are arranged in a direction intersecting a feed direction of the sewing thread. 6.
The thread-colored sewing machine according to any one of the above. 6. A method for controlling a thread-colored sewing machine comprising a seam forming means, a cloth feeding means, and a thread-coloring means for coloring a sewing thread with ink ejected from an ink-jet head. A thread provided so that nozzles are arranged in a line, the direction of arrangement of the ink discharge nozzles is set to a direction along the feed direction of the sewing thread, and the sewing thread is moved in a direction intersecting the feed direction. Control method of colored sewing machine.